Storage-battery separator



G. STEERUP.

STORAGE BATTERY SEPARATOR.

.A?PLICATION FILED mus, ms.

1,49%577. I y Patented Jan. 17,1922.

W I TNESS:

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INVENTOR.

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45 chosen to constitute the mat warren CAG'O, ILLINOIE, ASSIGIJGR E '0'. S. LKGHT & HEEJI COB- STQEAGE-BATTERY SEPAZR-A'EGR.

. V itpecification of letters Eatent. Patented ,]an 1'? 1922 Application filed. danuary .29, 181' Serial Ito. 273,?43'.

' To all whom 2' may/concern .Be it known that I, Goornnr Srnnnor, a citizen of the'll'nited States, residing at Chicago, in the county of Cook and State of 5 Illinois, have invented new and useful improvements in Storage-Battery Separators, of which the following is a specification.

The presentinvention relates to storage.-

battery separators.

More particularly the present invention relates to an improved separator which storage battery cell while preventing shortcircuitingg from a plate of one polarity to one of the opposite polarity.

An object of the present invention isto provide a storage battery separator which will be sturdy and which will remain in good condition for long periods of time.

A. further object is to provide a storage battery separator which will be cheap to manufacture as well as reliable in operation.

Referring to the drawings, Figure 1 rep resents a fragmentary View in elevation of a '25 storage battery separator according to the present. invention. u

Figure 2 represents ariew in cross section of a separator.

Figures 8 and 4 represent holding devices. According to the embodiment or" the present invention illustrated in Figs. 1 and 2, a pair of thin sheets of acid-resisting material 1, 1, are provided. These two sheets 1. 1, may be of rubber or of any other mate- 3 rial which has the necessary stiffness. Said sheets 1, 1 should beef insulating material.

These two sheets of insula ing material 1, 1 are juxtaposed. hat is to say,

but when these sheets are placed in parallel relation to form a storage battery separator, these perforations, which are indicated by the numeral 3. should be out of line with one anothenthat is to say, the perforations 3 in I one sheet should be out or register with the ill permit circulation of the electrolyte in the they are placed side by side in parallel relation. As laillustrated in Fig. 2, thesheets l, 1 are sepper'foratlons on the complenientaryssheet. Expressed in a slightly diilerent Way, the perforations of one sheet should be staggered relative to these or" the complementary sheet. This construction results in a circuitous path for the electrolyte through the separator. This path through a perforation in one sheet toward a perforation in the complementary sheet may be vertical, horizontal or at any angle between the vertical and horizontal.

if preferred, the mat 2 may be omitted, the sheets 1, 1 being placed in contact with one another. I have noted that when two sheets oi. rubber or similar material are wet, they will cling together throughout their juxtaposed areas. The same clinging effect or attraction is present between the rubber sheet 1 and the mat 2. The mat 2 between the sheets 1, l, or the space between the sheets 1, 1, if no mat is used, provides a capillary space for the passage of the electrolyte. In practice, the electrolyte may pass from one side of the separator to the other, While any sediment or other solid material Will be stopped. Short-cireuiting between the plates will therefore be prevented.

The parts of the separator may be held toother by means of clips at the corners or along opposite sides. The nature of these clips is immaterial but they may be of hard rubber or other acid-resisting material. A clip which will be found satisfactory is illustrated in Figs. 3 and a. This clip is indicated by the numeral 4 and comprises a pocketshaped piece of material providing side walls 5, 5. adapted to embrace the sheets 1, l and hold same together. Ir" preferred, the clips be dispensed with and the parts of the se mrator held together by other means, as for instance, sealing compound, It will be understood that the illustrations are not drawn to scale and are not intended to give any indication of relative size of perforations and distance therebetween. -The dimensions may be varied as desired, without departing: from the present invention. lllany other modifications may be made which will not depart trorn'the invention. The. patent is intended to cover all such modifications that come Within the scope of the appended claims.

What 1 claim as new and desire to secure by Letters Patent o fiqthe United States, is- 1.711). a battery separator, in combination, a plurality of juxtaposed thin sheets of material which cling together when wet, the outside sheets being perforated, there being only capillary passageways from perforations of one of said sheets to the perforations of other of said sheets. 2. In a battery separator, in combination, outer sheets of perforated relatively stitf material "and an inner sheet of cellular ma terial, there being only capillary passageways from perforations of one of said sheets to the perforations of other of said sheets.

In a battery separator, in combination, a pail-of perforated sheets of electrolyte resisting material, said sheets being juxtaposed with the perforations of one sheet out of register with the other sheet, there being GODFREY STEERUP.

perforations of other of said 

